ASN Wikibase Occurrence # 176387
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| Date: | Tuesday 13 April 2004 |
| Time: | 12:30 |
| Type: |  Piper PA-46-310P Malibu |
| Owner/operator: | Private |
| Registration: | N861DD |
| MSN: | 4608002 |
| Year of manufacture: | 1986 |
| Total airframe hrs: | 3448 hours |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Taylor, PA -
 United States of America
|
| Phase: | Landing |
| Nature: | Private |
| Departure airport: | Factoryville, PA (9N3) |
| Lancaster, PA (LNS) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The airplane was in a climb at 5,500 feet, when the engine began to vibrate and lose power. The pilot observed an increase in oil temperature, and a decrease in oil pressure; which was followed by a total loss of engine power. The pilot performed a forced landing to a field; however, during the landing, the airplane's left wing impacted a tree. Examination of the airplane revealed streaks of oil on the engine cowling, and a 6-inch hole in the top of the engine crankcase, in the vicinity of the number 2 cylinder. Further examination revealed that the number 2 connecting rod was broken into four pieces. The connecting rod journal was black in color and the metal had a "smeared" appearance. Fretting was observed on the mating surfaces of the number 2 main bearing saddles. In addition, the bearing shells had "walked" towards the rear of the engine about 1/4 of an inch. The crankcase through-bolt torques could not be determined. According to a representative of the engine manufacturer, a bearing shift could result in a decrease in oil flow to the journal, and a subsequent catastrophic engine failure. The airplane had been operated for 26 hours, since it's most recent annual inspection, which was performed about a month prior to the accident. The engine had been operated for about 1,700 hours, since it was rebuilt by TCM about 9 years prior to the accident.. The number 2 and 4 cylinders had been replaced about 830 hours prior to the accident.
Probable Cause: The failure of the number 2 connecting rod, after a main bearing shift, which resulted in a catastrophic engine failure.
Accident investigation:
 |
|
Sources:
NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20040419X00479&key=1
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 26-May-2015 12:59 | Noro | Added |
| 21-Dec-2016 19:30 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 07-Dec-2017 17:52 | ASN Update Bot | Updated [Cn, Other fatalities, Departure airport, Destination airport, Source, Narrative] |
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